Overvoltage protection circuit for output port of battery test equipment

Abstract

The invention provides an overvoltage protection circuit for an output port of battery test equipment. The overvoltage protection circuit comprises a power conversion circuit, a relay, the output port, a battery, a detection circuit, a logic circuit, an upper computer and a driving circuit, wherein the control input end of the power conversion circuit is electrically connected with the output endof the upper computer, the power output end of the power conversion circuit is electrically connected with the output port through a switch of the relay, and the output port is electrically connectedwith the battery; a coil of the relay is electrically connected with the output end of the driving circuit, the input end of the overvoltage detection circuit is electrically connected with the outputport, the output end of the overvoltage detection circuit is electrically connected with the input end of the logic circuit, and the output end of the logic circuit is electrically connected with theupper computer and the input end of the driving circuit. According to the invention, the safety and reliability of real-time alarm and protection after overvoltage of the output port of the equipmentare ensured.

Description

technical field [0001] The invention relates to the technical field of battery testing, in particular to an overvoltage protection circuit for an output port of battery testing equipment. Background technique [0002] As an energy storage device that can store energy, batteries have been widely used in various fields such as aerospace, transportation, mobile communications, and photovoltaic energy storage. Therefore, management or testing equipment for batteries has also been used in related applications. [0003] However, when using battery test equipment, the user may connect a battery with a voltage higher than the range to the output port, or charge the battery higher than the voltage range. If these two situations occur, it may cause damage to the battery or the device, or even In the event of serious fire and other dangerous accidents, general battery testing equipment should be equipped with an output port overvoltage protection function. Contents of the invention ...

AI Technical Summary

Problems solved by technology

[0003] However, when using battery testing equipment, the user may connect a battery with a voltage higher than the range to the output port, or charge the battery higher than the voltage range. If these two situations occur, it may cause damage to the battery or the device, or even In the event of serious fire and other dangerous accidents, general battery test equipment should be equipped with output port overvoltage protection function

Images